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Effect of poly- and oligosaccharidic fractions from Ulva sp. on fibroblast (a) type I collagen synthesis (n = 6) and (b) MMP-1 (Matrix Metalloproteinase-1) synthesis (n = 4) determined by ELISA assays. NHDF were cultured for 48 h with two concentrations (50 and 1000 µg/mL) of fractions. Significant differences between fractions and control are indicated by * p < 0.05.
